Polymer‐supported 4‐aminoformoyldiphenylammonium triflate (PS‐AFDPAT): An efficient,recoverable and recyclable catalyst for esterification of carboxylic acids with equimolar amounts of alcohols
Polymer‐supported 4‐aminofonnoyldiphenylammonium triflate (PS‐AFDPAT) is an efficient catalyst for the esterification between equimolar amounts of carboxylic acids and alcohols under mild conditions, which can be recycled without loss of activity.